ignition-cmake2 2.3.0 (#1090)
ignition-cmake2 2.3.0 (#1090)

Co-authored-by: Steve Peters <19cdd629ec3b4ea4663c77a4169548f370fdc02f@openrobotics.org>
scpeters/homebrew-simulation,j-rivero/homebrew-simulation,osrf/homebrew-simulation